NHTSA ID Number: 10235223
Manufacturer Communication Number: LSB000623
TSB/Document Date: 2023-05-01
Summary
TSB: A head unit software update is now available for 2023 model year LX 600, NX 250, NX 350, NX 350h, and NX 450h+ vehicles equipped with Lexus
Multimedia (version 1040 or earlier). This update provides improved performance and capability for the following: ?User profile. ?Over-the-air (OTA) notifications. ?Ability to search during a call. ?Bug fixes settings/configuration. ?Security enhancements.
L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Service
Category
Audio/Visual/Telematics
Section
Navigation/Multi Info Display
Market USA
Applicability
YEAR(S)
MODEL(S)
2023
LX600, NX250, NX350,
NX350H, NX450H+
ADDITIONAL INFORMATION
Introduction
A head unit software update is now available for 2023 model year LX 600, NX 250, NX 350,
NX 350h, and NX 450h+ vehicles equipped with Lexus Multimedia (version 1040 or earlier). This
update provides improved performance and capability for the following:
User profile.
Over-the-air (OTA) notifications.
Ability to search during a call.
Bug fixes settings/configuration.
Security enhancements.
© 2023 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 13
L-SB-0006-23
February 13, 2023
Page 2 of 13
Head Unit Software Update (Panasonic)
Introduction (continued)
Vehicle operators can perform this update directly by accepting the on-screen notification
(see Figure 1), advising the software update is available, or by locating the software update from
the Settings menu and initiating the available update (see Figure 2). The release notes text below
will be displayed to the customer:
“This software update includes improvements for User Profile, OTA notifications, ability to
search during a call, and bug fixes.”
Figure 1.
Figure 2.
If it is necessary to perform the software update for a customer, follow the software update
procedures in this bulletin.
This is a phased rollout, which means that as time progresses, more vehicles will receive the
update notification and ability to update the head unit. This timing will vary by location and may not
display for every vehicle in one location at the same day/time.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
Software Update Information
The following conditions and performance improvements for Lexus Multimedia are addressed with
this head unit software update:
User profile.
OTA notifications.
Ability to search during a call.
Bug fixes settings/configuration.
Security enhancements.
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0006-23
February 13, 2023
Page 3 of 13
Head Unit Software Update (Panasonic)
Software Update Information
MODEL
HEAD UNIT
CALIBRATION ID
LX 600
Premium
rb_update_2023_LX_NP_HU_D_01050.zip
NX 250, NX 350,
NX 350h, and NX 450h+
Entry
rb_update_2023_NX_NE_HU_D_01050.zip
Premium
rb_update_2023_NX_NP_HU_D_01050.zip
MULTIMEDIA SOFTWARE FILE DOWNLOAD
The multimedia software update file may be downloaded directly from this Service Bulletin by
clicking on the file name in the table above. Once downloaded, do NOT extract the files (unzip), the
files need to be saved directly to a blank USB flash drive.
For USB flash drive requirements and download instructions, refer to TIS – Diagnostics –
Reprogramming – Reference Documents – Multimedia Software Download Instructions.
NOTE
The USB method should ONLY be used when the Wi-Fi/Cellular method of updating is unsuccessful.
Multiple files can NOT be on the same USB flash drive, if there are two files on the drive beginning with
"rb_update" the software installation will not begin.
Software Update Procedures
Wi-Fi Connection Procedure....................................................................................................... 4
OTA Update Procedure (Wi-Fi and Cellular) ............................................................................... 5
USB Update Procedure ............................................................................................................ 10
HINT
Future OTA updates may use the Wi-Fi delivery method for the update data.
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures
Wi-Fi Connection Procedure
1. Turn ON the ignition.
2. Select the gear icon in the lower left corner
of the radio screen.
Figure 3.
3. Select Data & Wi-Fi.
Figure 4.
4. Select Wi-Fi and turn the Wi-Fi toggle to ON.
Figure 5.
HINT
This step is used to connect the vehicle to
an EXTERNAL Wi-Fi source.
Wi-Fi connection is NOT required for
updates that are delivered through
DCM data.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
Wi-Fi Connection Procedure (continued)
5. Select the Wi-Fi network desired to connect.
Figure 6.
NOTE
It is NOT possible to connect to a Wi-Fi
source that requires a username and
password to be entered in a browser.
6. Follow the on-screen instructions.
A message will appear confirming that the
vehicle is successfully connected to
the network.
Figure 7.
OTA Update Procedure (Wi-Fi and Cellular)
1. Select the gear icon, scroll down, and select
Software update.
Figure 8.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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February 13, 2023
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Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
OTA Update Procedure (Wi-Fi and Cellular) (continued)
Figure 9.
2. Are software updates available?
YES — Continue to step 3 to update
the vehicle.
NO — This bulletin does NOT apply,
continue diagnosis using the
applicable Repair Manual.
Figure 10.
3. Is the software up to date?
(Refer to Table 1 below.)
YES — This bulletin does NOT apply,
continue diagnosis using the
applicable Repair Manual.
NO — Continue to step 4.
4. Is the software version in the vehicle the
previous versions listed in Table 1?
YES — Continue to step 5.
NO — The version is five or more
versions old. Go to the USB
Update Procedure subsection.
5. Verify that the software is up to date on the Software Update screen.
Table 1. Software Version Information
TYPE
PREVIOUS VERSION
CURRENT VERSION
HU Version
1040
1050
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
OTA Update Procedure (Wi-Fi and Cellular) (continued)
6. Select Update Software.
Figure 11.
7. Select Accept on the Terms of
service screen.
Figure 12.
8. Wait for the update to download.
Figure 13.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
OTA Update Procedure (Wi-Fi and Cellular) (continued)
9. Select Accept on the Notice pop-up
message if it appears.
10. Wait for the update to download. Once the
head unit begins installation, the update will
take 10 minutes or less.
Figure 14.
Figure 15.
NOTE
Do NOT turn OFF the engine or ACC
BEFORE the software is ready
for updating.
Selecting Cancel will cancel the installation
of the specific component, but it can be
installed manually later.
11. If a major update is being installed the
message “{Software update in progress}” will
be displayed.
Figure 16.
NOTE
Do NOT turn OFF the engine or ACC
BEFORE the software has
updated successfully.
Selecting Cancel will cancel the installation
of the specific component, but it can be
installed manually later.
© 2023 Lexus, a division of Toyota Motor Sales, USA
Page 8 of 13
L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
OTA Update Procedure (Wi-Fi and Cellular) (continued)
12. The software installation is complete when
either a “Software installation complete”
banner (Figure 17) or the “Software update
complete” screen (Figure 18) is displayed.
Figure 17.
NOTE
If the vehicle has installed a major update,
and the “Software update complete” screen is
displayed, then an IG-OFF/ON will need to be
performed prior to attempting to operate any
of the infotainment functions.
Figure 18.
13. If a restart is necessary, select Yes to restart
the head unit.
Figure 19.
NOTE
If No is selected or the vehicle is switched to
IG-OFF, the installation will occur at the
next IG-ON.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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February 13, 2023
Page 10 of 13
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
OTA Update Procedure (Wi-Fi and Cellular) (continued)
14. If after IG-OFF/ON a “Software could not be
updated” banner appears, continue to the
USB Update Procedure subsection.
Figure 20.
USB Update Procedure
1. Download the software from the Software Update Information section onto an empty USB
flash drive.
NOTE
The USB method should ONLY be used when the Wi-Fi/DCM method of updating is unsuccessful.
Even for USB update, confirm one of the following signals is present for the head unit:
Data Communications Module (DCM) (this function is NOT available in some countries
or areas.)
Wi-Fi.
Multiple files CANNOT be on the same USB flash drive. If there are two files on the drive
beginning with "rb_update" the software installation will NOT begin.
This process MUST be used for each applicable update file in this bulletin.
2. Select the gear icon and scroll down to
Software update.
Figure 21.
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
USB Update Procedure (continued)
3. Insert the prepared USB flash drive into the
vehicle’s data USB port.
Figure 22.
NOTE
If there are no media files on the USB flash
drive, there may be a “Device no response”
banner. This is normal.
4. Select Update Software.
Figure 23.
NOTE
The “Update Software” button may not be
available immediately after inserting the USB
flash drive. The head unit is unzipping the
software update file, and it may take up to
10 minutes for this button to become available
to press.
5. Select Accept on the Terms of
service screen.
Figure 24.
© 2023 Lexus, a division of Toyota Motor Sales, USA
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L-SB-0006-23
February 13, 2023
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
USB Update Procedure (continued)
6. Wait for the update to download. Once the
head unit begins installation, the update will
take about 15 minutes per update file.
Figure 25.
NOTE
Do NOT turn OFF the engine or ACC
BEFORE the software is ready for updating.
Do NOT remove the USB flash drive until
instructed in step 7.
Selecting Cancel will cancel the installation
of the specific component, but it can be
installed manually later.
A. When the update is complete, “Install
Complete” will show on the head unit, as
shown in Figure 26.
Figure 26.
B. The “Software update” pop-up message
may also appear, as shown in Figure 27.
NOTE
If you are prompted to upload a report as
shown in Figure 28, insert a blank USB to
remove the .JSON files. These files are
NOT needed at this stage of the process.
Figure 27.
Figure 28.
© 2023 Lexus, a division of Toyota Motor Sales, USA
Page 12 of 13
L-SB-0006-23
February 13, 2023
Page 13 of 13
Head Unit Software Update (Panasonic)
Software Update Procedures (continued)
USB Update Procedure (continued)
7. Perform an ignition cycle. After the system has successfully booted up remove the USB
flash drive.
8. Wait two minutes.
9. Perform steps 1 – 7 again if performing an additional update.
10. Perform steps 1 – 3 of OTA Update Procedure (Wi-Fi and Cellular) to verify the software version
matches the table below.
Table 2. Software Version Information
TYPE
CURRENT VERSION
HU Version
1050
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TSB/Document ID: LSB000623
Replacement Service Bulletin Number:
MFR Communication Date: 2023-02-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: BACK OVER PREVENTION:SOFTWARE
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